support strap?

[Herbini]

I have no idea what this is. The only writing on it says revolving strap system. What is this for. and any other info about it. Thank you Herbini

 

Amazon Forum Fav 👍

Agony and Death on a Gold Rush Steamer: The Disastrous Sinking of the Side-Wheeler Yankee Blade - Grab it through Amazon!

[ARC]

Sumo wrestlers jock strap :P

 

[NOLA_Ken]

High tech camera strap....